Guide for match plates



June 112, 1923. 1,4582% W. BOCK I GUIDE FOR MATCH PLATES Filed June 20, 1921 2 Sheets-Sheet 1 9 ///4 16 /ij J5- r him Finn-v liji I 1 V y t l W5 gwuuflroz \Nfl'Li. am Back June 12, 1923. 11,458,206

W. BOCK GUIDE FOR MATCH PLATES Filed June 20. 1921 2 Sheets-Sheet 2 iln-neuron William ask Patented June 12, 1.923.

nears stea WILLIAM BOOK, or RACINE, wrsconsm.

GUIDE FOR IMATCI-I PLATES.

I Application filed June 20, 1921. Serial No. M9025.

T 0 all whom it may C0710677L.

Be it known that 1, WILLIAM Boon, a citizen of the United States, residing at Racine, in the county of Racine and State of l/Visconsin, have invented certain new and useful Improvements in Guides for Match Plates, of which the following is a specification.

This invention relates to foundry appliances, and the primary object of the in vention is to'provide a novel guide for match plates of flasks, which is so constructed as to maintain a certain resistance on the match plate, during the raising and lowering there of on the flash pins, said resistance being formed by a pair of spring pressed tension guide bars, slidably mounted within the guide, the tension on the flask pins caused by the match plate, through the medium of the spring pressed tension bars, eliminating the possibility of the pattern slipping, and the inconveniences caused by any unevenness in the surface of the flask pins, and any inconveniences caused by the cope portion of the flask sticking.

Another object of the invention is to provide an improved guide for match plate of foundry flasks of the above character, which is durable and efficient in use, one that is simple and easy to manufacture, one in which the sand or other 'foreign matter can not reach the working parts thereof, and which can be readily and easily associated with the flasks at a minimum cost.

With these and'other objects in view, the invention consists in the novel construction, arrangement and formation of parts, as will be hereinafter more specifically described, claimed and illustrated in the accompanying drawings, forming a part of this specification, in which drawings:

Figure 1 is a fragmentary side elevation of a flask, showing the improved guide associated with the match plate thereof.

Figure 2 is a fragmentary end elevation of the flask showing the improved guide incorporated with the match plate thereof.

Figure 3 is a top plan view of the improved guide.

Figure 4 is a section taken on the line 44: of Figure 5.

Figure 5 is an end elevation of the improved guide.

Figure 6 is a longitudinal section through the improved guide taken onthe line 66 of Figure 3.

Figure 7 is a detail perspective view of one of the tension plates or bars.

Figure 8 is a detail perspective View of the other tension plate or bar.

Figure 9 is a transverse section taken on the line 9-9 of Figure 3.

Referring to the drawings in detail, wherein similar reference characters designate corresponding parts throughout the several views, the leter A indicates a flask, which in cludes the cope 10 and the drag 11; B, the match plate interposed between the cope and drag; and C, the guide for the match plate. The cope 10 and the drag 11, are provided with the usual pins D and sockets F, which can be of the usual or any preferred construction.

As shown, the'pins D are secured to the drag portion 11 of the flask A by means of the face plate 12, and as shown, the pin extends upwardly from the face plate, and is substantially triangular shaped in cross section.

The socket F is attached to the cope port1on 10 of the flask A by means of a s fiitable base plate 13, and this socket may be provided with an adjustable guide 141-. This guide 14: is shaped to conform to the transverse configuration of the pin D.

As stated, the match plate B is interposed between the cope portion 10 and the drag portion 11 of the flask and extends outwardly of the ends thereof, and is suitably apertured for the reception of the pins D.

The improved guides C are carried by the match plate B, and are adapted to slidably receive the pins D, and are formed, as will now be described, to exert a tension onthe pins.

As shown, the guides C for the match plate 13 includes a bottom plate 15 and a top plate 16. The bottom plate 15 is provided with outwardly extending apertured cars 17, which are adapted. to receive suitable fastening elements 18, by means of which the guides are secured in position on the match plates.

The bottom plate 15 is also provided with a recessed portion 19, which opens out through one longitudinal edge of the plate. This recess 19 defines end walls 20, and a longitudinal wall 21. The end walls 20 are undercut as at 22, for a purpose, which will be hereinafter more fully described. The top plate 16 overlies the bottom plate 15 and fspaced a suflicient distance to permit the convenient insertion of the pins D into the is in facial abutment therewith, and is pro vided with a depending flange 23, on one of its longitudinal edges, which is adapted to fit the rabbeted portion 24c formed on the longitudinal edge portion of theljower plate 15. This flange 23 closes the entrance portion of the recess 19.

The plates 15 and 1.6 have slidably mounted therebetween the relatively broad tension plate or bar 26, and the relatively narrow tension bar or plate 27. These bars or plates 26'and 27 have their terminals bevelled as at 28, and inserted under the undercut portion 22 of the end walls 20. Theseplates are normally urged toward each other, by means of springs 29 and 30. These springs have been shown of the leaf type, but it is to be .understood that any suitable type of springs may ,beutilized for urging the plates toward each other. It is preferred that the top and lower plates leand 16 be formed of brass, while the tension plates or bars'26 and 27 be formed of bronze or the like. The top wall or plate 16 is provided with a triangular shaped cut out portion 81, which is braced along two of its sides, by meansof an up standing flange 32, which is adapted to engage the. outer surface of the pins D as clearly shown in Figures 1 and 2 of the drawings.

The lower plate 15 is also provided with a triangular shaped opening 33, which is in direct alignment with the opening 31. The

inner edge of the tension plate or bar. 26 is provided with an inwardly extending V shaped notch portion 34:, which is adapted to engage the outer surface of the side walls of the pins D. The inner edgeof the tension plate or bar 27 isprovided-with a V- shaped projection 35, which is adapted to engage the inner surface of the side walls of the pins. The inner edge of the bar or ten-i sion plate 27 is provided with spacing lugs 86, which are adapted to engage the inner edge of the tension. plate or bar 26. This serves to hold the plates or bars 26 and 27 guides.

In applying the improved guides to match plates, it is merely necessary to aperture the Imatch plate for receiving the pins D and to secure the guides in position. The guides I and match plates are then slid into position on the pins D in the ordinary manner.

,Itcan be seen that the tensionplates or bars 26 and 27 will create a tension or resistance on the pins D, thus causing the steadying of the flask, and absolutely preventing shifting of the pattern. The tension plates also take care of any uneven spots on the flask pins, and facilitates the removal and eliminates the sticking of the cope por tion of-the flask.

From the foregoing description, it can be seen that an improved attachment has been provided for foundry flasks,[of the above character, which will effectively guide the match plates to and from position, and which is so constructed that sand or other foreignmatter cannot gain access thereto, the guides being so constructed however, as to permit ready access thereto whenit is desiredto make repairs to the parts thereof.

the flask pin.

The combinationwith a foundry including a cope'portion, aidragportion,

and a match plate, socketsand pins carried I J respectively by the cope and drag portions, guides secured to the match plate, tension plates slidably mounted in ,the .guides arranged vto engage the opposite-sides of the flask pins, and spring meansnormally urging said tension plates into frictional con tact with the opposite sides of the flask ins. Y I i p 3. The combination with a foundry flask including a cope portion, a "drag portion and a match plate interposed. between said portions, flaskpins and sockets carried by said portions, guides carried by the match plate for engaging the flask pins including casings sliding .tension plates carried by the casings, and leaf springs arranged in said casings fornormally urging the tension plates into engagement with'the opposite sides of the flask pins.

4. The combination with a foundry flask in'cluding'a cope portion, a drag portion, and a .match plateinterposed therebetween, flask sockets and pins carriedby the respective copeand drag portions, of a guidefor the match plate including a two-part casing, the upper and lower parts of the casing have ing openings formed therein to receive the r 1 flask pins, plates slidably mounted in the casing between-the parts thereof shaped to "conform to the configuration of the ,flask Y pins which. they are to engage, and springs engaging the walls of the casing and the outer edges of the tension plates for. nor-:

mally urgingthe tension plates into engage mentwith the opposite sides of the flask pins.

5. A guide for pins of foundry flasks comprising a casing including a top plate and a bottom plate, the bottom plate having a recess formed therein opening-out through a one edge thereof, the mentioned edge-being.

rabbeted, a depending flange formed on one edge of the top plate arranged to fit in the rabbeted portion, the opposite end walls of the bottom plate formed by the recess therein being undercut, said top and lower walls having recesses iorined therein shaped to conform to the configuration of the flask pins with which they are to be used, said openings being formed relatively larger than the flask pins, a relatively wide tension plate arranged in the casing, a relatively narrow tension plate mounted in the casing the ends of the tension plates being bevelled and fitted in the undercut portions of said end walls, the inner edge of one of said tension plates having a notched portion formed therein to conform to the configuration of the flask pin with which the guideis to be associated, the other tension plate having a projection formed thereon arranged to conform to the configuration of the flask pin, and leaf springs arranged in the casing and engaging the opposite sides of the tension plates to normally urge the same into engagement with the flask pins. WILLIAM BOOK. 

